A phoenix takes flight

She has unmistakable hot red hair that makes her stand out
Most of her life is a mystery to her. She has forgotten many things over the past. She doesn't know if it's because she doesn't wanna remember or she just can remember.
She's practically invincible during daylight, she heals instantly in the sunlight and is stronger and faster than any human.
At exactly midnight every night, she becomes completely immobilized, until the sun rises in the morning.
she loses her memory of who she is and what she experiences each year.

Also please know that this book might have triggers in it I'm writing this book from the top of my head.